EP3186405A1 - Acier présentant une haute résistance à l'usure, une dureté élevée, une bonne résistance à la corrosion et/ou une faible conductivité thermique et utilisation d'un tel acier - Google Patents
Acier présentant une haute résistance à l'usure, une dureté élevée, une bonne résistance à la corrosion et/ou une faible conductivité thermique et utilisation d'un tel acierInfo
- Publication number
- EP3186405A1 EP3186405A1 EP15756892.4A EP15756892A EP3186405A1 EP 3186405 A1 EP3186405 A1 EP 3186405A1 EP 15756892 A EP15756892 A EP 15756892A EP 3186405 A1 EP3186405 A1 EP 3186405A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel
- steel according
- content
- weight
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 145
- 239000010959 steel Substances 0.000 title claims abstract description 145
- 230000007797 corrosion Effects 0.000 title claims abstract description 14
- 238000005260 corrosion Methods 0.000 title claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 239000011159 matrix material Substances 0.000 claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004033 plastic Substances 0.000 claims abstract description 18
- 229920003023 plastic Polymers 0.000 claims abstract description 18
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 17
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 10
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 150000004767 nitrides Chemical class 0.000 claims abstract description 5
- 238000004064 recycling Methods 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 27
- 239000010936 titanium Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000000137 annealing Methods 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 4
- 238000004663 powder metallurgy Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 230000008929 regeneration Effects 0.000 claims description 2
- 238000011069 regeneration method Methods 0.000 claims description 2
- 229910000760 Hardened steel Inorganic materials 0.000 claims 1
- JOCBASBOOFNAJA-UHFFFAOYSA-N N-tris(hydroxymethyl)methyl-2-aminoethanesulfonic acid Chemical compound OCC(CO)(CO)NCCS(O)(=O)=O JOCBASBOOFNAJA-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 abstract description 9
- 239000012071 phase Substances 0.000 description 22
- 239000011651 chromium Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910000734 martensite Inorganic materials 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 238000004881 precipitation hardening Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229940075397 calomel Drugs 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 238000001513 hot isostatic pressing Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 239000011156 metal matrix composite Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910019802 NbC Inorganic materials 0.000 description 1
- 229910034327 TiC Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000010094 polymer processing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052861 titanite Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/10—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on titanium carbide
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0292—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with more than 5% preformed carbides, nitrides or borides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
Definitions
- the invention relates to a steel for uses requiring high wear resistance, high hardness, good corrosion resistance and / or low thermal conductivity.
- Cutting tools perforated plates, sieves, molds and similar components for machines needed in the plastics processing industry.
- a typical field of application here are machines for the regeneration or recycling of plastic products, which are melted down into a melt for their return into the processing cycle.
- the melt is forced through a perforated plate, from which it emerges in a large number of single strands.
- the single strands solidify and then by means of suitable, near the perforated plate rotating knives to individual granules
- the perforated plates used must have a good corrosion resistance due to the corrosive environment in which they are exposed in use and are exposed to high abrasive wear. Especially for the
- a known steel intended for this purpose is known under the material number 1.2379 (AISI designation: D2). It contains besides iron and unavoidable Impurities (in wt%) 1.55% C, 12.00% Cr, 0.80 Mo and 0.90% V.
- Material number 1.3343 (AISI designation: M2) standardized. It contains besides iron and unavoidable
- Impurities (in wt%) 0.85-0.9% C, 0.25% Mn, 4.1% Cr, 5.0% Mo, 1.9% V and 6.4% W.
- the highest demands on wear are to be met by the martensitic steel standardized under the material number 1.4110 (AISI designation: 440A), which in addition to iron and unavoidable impurities (in% by weight) 0.6 - 0.75% C, max. 1% Mn, max. 1% Si, max. 0.04% P, max. 0.03% S, 16 - 18% Cr and max. 0.75% Mo contains.
- This steel achieves a hardness of at least 60 HRC after a suitable heat treatment.
- a steel known under the trade designation "Ferro-Titanit Nikro 128" which has been specially created for the manufacture of components used in the processing of abrasive plastics, contains besides iron and unavoidable impurities (in% by weight) 13 , 5% Cr, 9% Co, 4% Ni and 5% Mo.
- the proportion of titanium carbide in the structure of the composite steel is 30 wt .-%, which corresponds to a volume fraction of about 40 vol .-% TiC.
- the well-known powder metallurgy produced steel achieved after over two to four hours under vacuum annealing at 850 ° C and a subsequent deterrence, in which he was a
- a subsequent curing treatment in which the steel over six to eight hours at 480 ° C, to a maximum hardness of about 62 HRC can be increased.
- From this steel are typically perforated plates, granulators, spray nozzles and
- Screws, rings and other pressing tools for the processing of abrasive plastics as well as components for pumps, filling heads and ring knives, which are required for canning-filling machines see data sheet "Ferro-Titanit Nikro 128"
- the object of the invention was to provide a steel which is in the
- the invention provides a steel for applications requiring high wear resistance, high hardness, good corrosion resistance and / or low thermal conductivity.
- the steel according to the invention achieves a hardness of at least 56 HRC in the cured state and contains in its structure a total of at least 30% by weight of hard phases
- TiC particles of carbide, Oxide or nitride particles present in addition to the TiC particles of carbide, Oxide or nitride particles exist.
- the content of TiC particles is
- the hard phases are in a matrix
- a steel according to the invention is particularly suitable for the production of components for
- Hole openings are made microfine to produce correspondingly finely granulated granules.
- knives for shredding of steel according to the invention can be made
- a steel according to the invention contains at least 20% by weight of TiC embedded in a matrix which is penetrated by
- Deterioration contributes to the hardenability of the steel and at the same time is chosen so that a low
- Thermal conductivity of less than 35 W / mK is guaranteed regardless of the respective heat treatment state.
- the passive current density of the steel according to the invention is less than 5 ⁇ / cm 2 , measured in oxygen-free 0.5 molar sulfuric acid with a
- Wear resistance has a corrosion resistance comparable to the corrosion resistance
- steels is at a temperature of 20 ° C at more than 270 GPa, in particular more than 300 GPa, so that the steel according to the invention or produced therefrom
- Coefficient of expansion of steel according to the invention is that for applications for the steels according to the invention
- the steel according to the invention contains at least 20% by weight, corresponding to about 30% by volume of TIC, or at least 28% by weight of TiC, in particular at least 30% by weight of TiC.
- the TiC content should not exceed an upper limit of 45% by weight. That way you can ensure that yourself
- Too high a hard phase content leads to increased hardness and wear resistance.
- a steel according to the invention also contributes that According to the invention further hard phases are present in addition to the TiC particles in the steel matrix, so that the volume fraction of the hard phases in the structure of the steel is at least 30 wt .-% in total. This can be done by separate addition of carbide, nitride or oxide particles in the production of the steel. Alternatively or additionally, the elements forming the weight fractions of the precipitates (Ni, Al, Ti) can also be used within the
- form steel according to the invention are intermetallic precipitates, in whose formation mainly the elements Ni, Al and Ti are involved. These elements form Ni 3 Al and Ni 3 Ti or mixed forms. These intermetallic phases are present in the structure with grain sizes of the order of 10 nm and are not counted to the total hard phase content. Due to their small size, they afford the
- intermetallic precipitations an increase in hardness and strength of the metal matrix and thus also contribute to improving the performance properties.
- Chromium is in the steel of the invention in levels of
- the Cr content is 12.5-14.5 wt .-%.
- Molybdenum is contained in the steel according to the invention in amounts of 5.0-9.0 wt .-%, on the one hand to ensure sufficient corrosion resistance, in particular with regard to pitting corrosion and on the other hand to support the formation of intermetallic phases, by the hardness of the steel matrix, in which the hard phases are embedded, is increased.
- the Mo content of the steel according to the invention is 6.5-7.5% by weight.
- Cobalt is contained in the steel according to the invention in contents of 6.0 - 11.0 wt .-%, in order to To increase martensite start temperature and on the other hand to reduce the solubility of Mo in the metal matrix. In this way, in the inventive
- the Co content of the steel according to the invention is 8.0-10.0% by weight
- Copper is in the steel of the invention in contents of
- the Cu content of the steel according to the invention is 0.5-1.0% by weight.
- Nickel is in the steel according to the invention in contents of
- Nickel is needed in the steel matrix in sufficient quantity to be at a
- the presence of nickel stabilizes the austenite to such an extent that martensite is safely formed during quenching. If too little nickel is present in the steel matrix provided according to the invention, this effect is not achieved with the necessary certainty. If, on the other hand, too much nickel is present in the steel matrix, no martensite forms, since the austenitic phase is then stable even at room temperature.
- the second object of nickel in the steel according to the invention is precipitation hardening by formation of intermetallic phases with elements such as Al and Ti. Therefore, in the steel matrix of the invention Steel the contents of Ni, Al and Ti on each other
- Titanium is in the steel according to the invention in contents of
- the Ti content of the steel according to the invention is 0.8 to 1.2% by weight.
- aluminum is contained in the steel of the present invention at levels of 0.1-2.0% by weight to effect precipitation hardening in combination with Ni.
- the Al content of the steel according to the invention is 1.0 to 1.4% by weight.
- the steel according to the invention can be hardened with extremely low distortion, since titanium carbide has a low thermal expansion and no transformation.
- the wear resistance of the steel according to the invention is increased.
- the NbC particles have a lower thermal conductivity than TiC, which is beneficial to the
- Tic and NbC are isomorphic carbides and therefore miscible with each other. This leads to
- the carbide, nitride and oxide particles used according to the invention as hard phases are already supplied as "finished” particles during powder metallurgical production.
- both the sintering, as well as the HIP (hot isostatic pressing) route can be used.
- this is also suitable
- the steel according to the invention can be used to adjust its mechanical properties to a conventional one
- Steel according to the invention regularly has a hardness of more than 62 HRC after such a heat treatment.
- Steel according to the invention has a hardness of more than 50 HRC.
- the invention is based on
- Fig. 1 shows a detail of a
- FIG. 2 is a diagram in which the results of
- Fig. 3 is a diagram with the result of an
- composition of the steel V corresponded to the composition of the known under the name "Ferro-Titanit Nikro 128", for example, in the above-mentioned publication documented steel.
- the completed in the powder metallurgical production of both steels E, V operations corresponded to the
- Heat treatment corresponded.
- samples PE1 and PV1 were first kept in vacuo at a temperature of 850 ° C. for a period of two to four hours and then quenched under a nitrogen atmosphere pressurized with 1 to 4.5 bar. This is followed by a curing treatment in which the samples PEl, PVl have been stored for six to eight hours at a temperature of 480 ° C.
- Fig. 1 shows a section of a
- Metal matrix is recognizable by the bright areas, whereas the TiC inclusions surrounded by the matrix are rendered dark.
- the hard phase contents were determined on the samples PE1, PV1, PE2, PV2. They were with the from the
- Comparative steel V produced samples PV1, PV2 had on average only 30 wt .-% hard phases.
- PEl, PE2, PVl, PV2 five hardness measurements according to DIN EN ISO 6508-1 were carried out.
- the mean values of the measured values thus acquired for the samples PE1, PE2, PV1, PV2 are in
- the TiC content of the samples according to the invention PE1, PE2 was, as indicated in Table 1, each more than 30 wt .-%.
- the modulus of elasticity is determined by means of ultrasound in FIG.
- PV1 was 294 GPa.
- FIG. 4 shows, by way of example, the result of a dilatometer measurement on a sample PE 1 produced from the steel according to the invention, which confirms this result.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014112374.3A DE102014112374A1 (de) | 2014-08-28 | 2014-08-28 | Stahl mit hoher Verschleißbeständigkeit, Härte und Korrosionsbeständigkeit sowie niedriger Wärmeleitfähigkeit und Verwendung eines solchen Stahls |
PCT/EP2015/069477 WO2016030396A1 (fr) | 2014-08-28 | 2015-08-26 | Acier présentant une haute résistance à l'usure, une dureté élevée, une bonne résistance à la corrosion et/ou une faible conductivité thermique et utilisation d'un tel acier |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3186405A1 true EP3186405A1 (fr) | 2017-07-05 |
EP3186405B1 EP3186405B1 (fr) | 2018-10-03 |
Family
ID=54014808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15756892.4A Active EP3186405B1 (fr) | 2014-08-28 | 2015-08-26 | Acier présentant une haute résistance à l'usure, une dureté élevée, une bonne résistance à la corrosion et/ou une faible conductivité thermique et utilisation d'un tel acier |
Country Status (9)
Country | Link |
---|---|
US (1) | US20180119257A1 (fr) |
EP (1) | EP3186405B1 (fr) |
JP (1) | JP6210502B1 (fr) |
KR (1) | KR20170041276A (fr) |
CN (1) | CN107075624A (fr) |
BR (1) | BR112017002127A2 (fr) |
DE (1) | DE102014112374A1 (fr) |
RU (1) | RU2674174C2 (fr) |
WO (1) | WO2016030396A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3263726A1 (fr) * | 2016-06-29 | 2018-01-03 | Deutsche Edelstahlwerke GmbH | Matériau à base de fe et son procédé de fabrication |
NL1043487B1 (en) * | 2019-11-28 | 2021-08-31 | Bosch Gmbh Robert | Ring component of a drive belt for a continuously variable transmission |
JP7287916B2 (ja) * | 2020-03-12 | 2023-06-06 | 株式会社神戸製鋼所 | 積層造形物の製造方法、及び積層造形物 |
CN111455274A (zh) * | 2020-04-08 | 2020-07-28 | 鞍钢股份有限公司 | 一种80Ksi级别9Cr火驱热采油井管及其制造方法 |
CN112251749B (zh) * | 2020-10-23 | 2023-04-07 | 黑龙江科技大学 | 一种利用等离子熔覆制备定向阵列的陶瓷相增强高熵合金耐磨涂层的方法 |
WO2022102805A1 (fr) * | 2020-11-10 | 2022-05-19 | 한국재료연구원 | Matériau composite à base de fe renforcé par des particules de tic et procédé pour la préparation de celui-ci |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3966423A (en) * | 1973-11-06 | 1976-06-29 | Mal M Kumar | Grain refinement of titanium carbide tool steel |
DE3015709A1 (de) * | 1980-04-24 | 1981-10-29 | Thyssen Edelstahlwerke AG, 4000 Düsseldorf | Hartstofflegierung |
JPH0229736B2 (ja) * | 1984-09-14 | 1990-07-02 | Mitsubishi Metal Corp | Bunsankyokagatashoketsugokinkoseinetsukantaimamobuzai |
JPH0586435A (ja) * | 1991-09-27 | 1993-04-06 | Hitachi Metals Ltd | 高耐食高耐摩耗性工具部品材料 |
SE9604538D0 (sv) * | 1996-12-10 | 1996-12-10 | Hoeganaes Ab | Agglomerated iron-based powders |
JP4279935B2 (ja) * | 1999-03-25 | 2009-06-17 | 株式会社神戸製鋼所 | 硬質粒分散焼結鋼及びその製造方法 |
US6521353B1 (en) * | 1999-08-23 | 2003-02-18 | Kennametal Pc Inc. | Low thermal conductivity hard metal |
SE529041C2 (sv) * | 2005-08-18 | 2007-04-17 | Erasteel Kloster Ab | Användning av ett pulvermetallurgiskt tillverkat stål |
SE528991C2 (sv) * | 2005-08-24 | 2007-04-03 | Uddeholm Tooling Ab | Ställegering och verktyg eller komponenter tillverkat av stållegeringen |
GB2440737A (en) * | 2006-08-11 | 2008-02-13 | Federal Mogul Sintered Prod | Sintered material comprising iron-based matrix and hard particles |
SE533988C2 (sv) * | 2008-10-16 | 2011-03-22 | Uddeholms Ab | Stålmaterial och förfarande för framställning därav |
EA033535B1 (ru) * | 2010-02-05 | 2019-10-31 | Weir Minerals Australia Ltd | Твердосплавные материалы |
RU2443795C2 (ru) * | 2010-04-16 | 2012-02-27 | Тамара Федоровна Волынова | МНОГОФУНКЦИОНАЛЬНЫЕ АНТИФРИКЦИОННЫЕ НАНОСТРУКТУРИРОВАННЫЕ ИЗНОСОСТОЙКИЕ ДЕМПФИРУЮЩИЕ С ЭФФЕКТОМ ПАМЯТИ ФОРМЫ СПЛАВЫ НА МЕТАСТАБИЛЬНОЙ ОСНОВЕ ЖЕЛЕЗА СО СТРУКТУРОЙ ГЕКСАГОНАЛЬНОГО ε-МАРТЕНСИТА И ИЗДЕЛИЯ С ИСПОЛЬЗОВАНИЕМ ЭТИХ СПЛАВОВ С ЭФФЕКТОМ САМООРГАНИЗАЦИИ НАНОСТРУКТУРНЫХ КОМПОЗИЦИЙ, САМОУПРОЧНЕНИЯ И САМОСМАЗЫВАНИЯ ПОВЕРХНОСТЕЙ ТРЕНИЯ, С ЭФФЕКТОМ САМОГАШЕНИЯ ВИБРАЦИЙ И ШУМОВ |
EP2662460A1 (fr) * | 2012-05-07 | 2013-11-13 | Valls Besitz GmbH | Traitements thermiques bainitiques résistants sur des aciers pour outillage |
-
2014
- 2014-08-28 DE DE102014112374.3A patent/DE102014112374A1/de not_active Withdrawn
-
2015
- 2015-08-26 JP JP2017502268A patent/JP6210502B1/ja active Active
- 2015-08-26 BR BR112017002127A patent/BR112017002127A2/pt not_active Application Discontinuation
- 2015-08-26 US US15/507,004 patent/US20180119257A1/en not_active Abandoned
- 2015-08-26 WO PCT/EP2015/069477 patent/WO2016030396A1/fr active Application Filing
- 2015-08-26 KR KR1020177008168A patent/KR20170041276A/ko not_active Application Discontinuation
- 2015-08-26 RU RU2017106319A patent/RU2674174C2/ru not_active IP Right Cessation
- 2015-08-26 EP EP15756892.4A patent/EP3186405B1/fr active Active
- 2015-08-26 CN CN201580046492.0A patent/CN107075624A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
KR20170041276A (ko) | 2017-04-14 |
JP6210502B1 (ja) | 2017-10-11 |
BR112017002127A2 (pt) | 2017-11-21 |
CN107075624A (zh) | 2017-08-18 |
RU2674174C2 (ru) | 2018-12-05 |
RU2017106319A (ru) | 2018-08-28 |
EP3186405B1 (fr) | 2018-10-03 |
WO2016030396A1 (fr) | 2016-03-03 |
RU2017106319A3 (fr) | 2018-08-28 |
US20180119257A1 (en) | 2018-05-03 |
JP2017532434A (ja) | 2017-11-02 |
DE102014112374A1 (de) | 2016-03-03 |
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